Study on a Roller-Footing Isolated Single-Pier System

Article Preview

Abstract:

As to improve bridges’ seismic performance, horizontal earthquake was isolated at the bottom of piers. With one pier system as the object of study, adopting nonlinear time history analysis analyzed the un-isolation system, the traditional isolation system and the new isolation system’s seismic performance especially when the actual earthquake was different from the design earthquake, in which the new isolation system was based on rolling balls. Results shows, as for the new isolation system, the internal force is independent of earthquake accelerations and earthquake periods, therefore, sympathetic vibration will not exist, and the internal force is always too small to destroy the system.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

2658-2661

Citation:

Online since:

October 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] M. J. N. Priestley, F. Seible, and M. Calvie: Seismic Design and Retrofit of Bridges. (John Wiley & Sons, New York 1996).

Google Scholar

[2] Y. C. Ou, J. W. Song, and G. C. Lee : Earthquake Engng. Struct. Dyn. Vol. 39(2010), p.541.

Google Scholar

[3] G. C. Lee, Y. C. Ou, T. C. Niu, et al : J. Struct. Eng. Vol. 136(2010), p.502.

Google Scholar

[4] R. S. Jangid, and Y. B. Londhe: J. Struct. Eng. Vol. 124(1998), p.469.

Google Scholar

[5] R. S. Jangid: Eng. Struct. Vol. 22(2000), p.937.

Google Scholar

[6] L. Guerreiro, J. Azevedo, and A. H. Muhr: J. Earthq. Eng. Vol. 11(2007), p.49.

Google Scholar

[7] R. H. Wang, Q. Xu, W. C. Shu, et al : Nature Science of Journal of South China University of Technology Vol. 31(2003), p.20 (In Chinese).

Google Scholar

[8] R. W. Clough, and J. Penzien: Dynamics of Structures. (Mc Graw-hill, Inc, New York 1993).

Google Scholar

[9] Y. Fahjan, Z. Ozdemir: Scaling of earthquake accelerograms for non-linear dynamic analysis to match the earthquake design spectra/The 14th World Conference on Earthquake Engineering, Beijing, China(2008).

Google Scholar